@startuml
sprite $speaker [48x48/16] {
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}


!define MATERIAL_SPEAKER(_alias) ENTITY(rectangle,black,speaker,_alias,MATERIAL SPEAKER)
!define MATERIAL_SPEAKER(_alias, _label) ENTITY(rectangle,black,speaker,_label, _alias,MATERIAL SPEAKER)
!define MATERIAL_SPEAKER(_alias, _label, _shape) ENTITY(_shape,black,speaker,_label, _alias,MATERIAL SPEAKER)
!define MATERIAL_SPEAKER(_alias, _label, _shape, _color) ENTITY(_shape,_color,speaker,_label, _alias,MATERIAL SPEAKER)
skinparam folderBackgroundColor<<MATERIAL SPEAKER>> White
@enduml